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Iron deficiency anemia  causing blue skin under the eyes. If there is a shortage of iron in the body, oxygen cannot be properly transported by the blood. Hemoglobin is the oxygen transporting component in the blood, moving oxygen from the lungs to the cells where it is released for normal cell metabolism.
Key terms. Albinism â An inherited condition that causes a lack of pigment. People with albinism typically have light skin, white or pale yellow hair and light blue or gray eyes. Hyperpigmentation â A skin condition that occurs when the body has too much melanin, or pigment.